Forum Discussion

dIone_24797's avatar
dIone_24797
Icon for Nimbostratus rankNimbostratus
Jul 31, 2013

Number of Executions IRule

Hello community,     We are using an IRule to throttle traffic from our client. We would think the number of requests per second on the VIP would equal the number of times the Irule gets exe...
application delivery
dev
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
Jul 31, 2013
i think i know what happens. it seems HTTP::respond is not counted in ltmVirtualServStatTotRequests.

e.g. 

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.252:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
        HTTP::respond 200
}
}

 generating 100 requests

[root@centos17 ~] ab -n 100 http://172.28.19.252/

 stats

[root@ve10:Active] config  snmpwalk -v 2c -c public localhost f5|grep ltmRuleEventStatTotalExecutions|grep myrule
F5-BIGIP-LOCAL-MIB::ltmRuleEventStatTotalExecutions."myrule"."HTTP_REQUEST".500 = INTEGER: 100

[root@ve10:Active] config  snmpwalk -v 2c -c public localhost f5|grep ltmVirtualServStatTotRequests
F5-BIGIP-LOCAL-MIB::ltmVirtualServStatTotRequests."bar" = Counter64: 0